New York’s Empire State Building will shine in regal purple and gold on Saturday to honor the Platinum Jubilee of Queen Elizabeth.

You'll want to turn your eyes to the Empire State Building at a specific moment to "enter" the upside down.

The Empire State Building, arguably New York’s most iconic skyscraper, celebrated its 90th birthday last year. The tower was officially opened on May 1, 1931, barely a year after its first steel beams were installed.

The proposal package will dedicate a corner of the building's iconic 86th Floor Observatory just for the special moment that you get down on one knee — and even pop a celebratory bottle of Champagne when the answer is yes.